Clutch-brake.



C, W. MITCHELL.

CLUTCH 'BRAKEl APILICATIQN FILED JULY15/,I 1915.

E-tenfed Feb. 5, 1918. f

WWA/55255:

C. W, IVH'TCHELL.

CLUTCH BRAKE. APPLICATION FILED 1uLY15. 1914.'

2 SHEETS-SHEET 2.

Mmmm

lill

To all wlom is? may @Macaw/;

Be il. lmowii that l, (1I-1A eme W. ilfi'jizoiimi. a, eltizen of the llmlecl Sme;

:incl dem: olf Phileflelpliie, in the eeuiity of BhileN clelphizi and @tete el lehzieylmiiia., have iii,- veneel eeiziie new mill iifseilil mente in fllutelblifehee. ol' which lewii'ig is a Specilleelion ,My invention. me; 'le eluteli bullied eclap'lecl te be connected with iriemi member for Vthe pulpos said moving member ei' movement thereof.

@ne of the elejeete el this iiii'ehlieii ai, elliteli brake eeiieiwh ef 'three radially movable perils und mlziptecl le ferm e surn face le eoifi'eepeml will). lhe el fihe meifieg; member for Jhe pmfpose el engaging il; imiei'n'ily over its entire friction Sui'ii'aiee., ii'i'espective ef weer.

Anothei' object of this invenlii u is :i Gleich brake which een. loe easily :unil lmielily 27e moved l'oi repairs :mel iez'neiihhxd;

With these and similar objects in View myv invention, eem} iieee the. eoheli'uelzlon, coinlohiaion and iufi'engemenl'. oif parte hereinn effei' desei'ibeeh a prefer-ed forni of which is illustrated in the accompanying drawving, and embraced within the scope el' he eppeiiclecl claims..

ln lhe Said dmwingr- Figure l is :i ifi'ziglrlentai'y side elevzillmi ol en nuten'lo'bile provided with my iin-- proved eluloh brakes one of which is shown in section in comieelioii with 4he fly ivh'fl of the motor, und, i full View el the other Shown in eohiieeitieu Wi'llh :i i'eaxi Wheel of he vehicle; Fig. il ie e xeniview of the zmlemobile Showing my reni' wheel clutch brel-:e in seeion; ligg.l 3 is zi front View of the elueh hiuke shown in section in. liig. il.; Fig. l is a. rear View ef the clutch hrelze shown in section in if); Fig. 5 is e. section on the line 5 5 el? lligg. 3; is mi enlarged section. of a fragmenl, of the ehii'ieh brake in connection with the clutch sleeve, and Fig. is u pefepeetive View el a pair ef @pei-:wing Cams in connection with lhe elutch brake shown in Fig. fl.

.Referring more pzutieulai'ly lo vthe drew ing fof a. detail description oimy iiiveiilicgn, il. represents the chf/issie, 2 i bracket provided with ieeth foe the brake heed-level? el, reir iesents the'brehe fecit-pedal, 6 the clutch pedal, 'Z he ily Wheel, euml 8 the ieei ei/heele. 5lClie :ely wheel l ie piovided wh 2m ameula teiliezil ring tapering ree; i iw ei'clly. .lli/f wheel,

.3: and out adapted lio he eeiipled with, the l ez'evicle a. clutch lei-ehe A having eli'exteiioi" surface adapted to register with' elle iilei'ior surface of the {if} wheel.

@n one fece of each ieei' Wheel 8 ie mmuiled e. easing 9 having an iiilzeiioi eylin 1li-leal surface. Adapted to be coupled Willi e *li easing fl provide e eluich hiele B haw ii eieiioi cylindrical surface' which miles-pende Wih alle eurleee of the easing.

The elnleh hinlie A cone-ists of three radial ehe-ee, ezieh pi'ovilileil with :m outwardly eX- lzemliiig flange l0, with sides .ll and, with eles lf2.

i. sleeve liff piovifilecl willi radial arms, eiieli edzipleil le carry i1. brake shoe, :mil haviiig e, pei'lioi'zied flange 14, under ehe flange el ehe shoe. llueh shoe yiehliiigly eonheeled with em"i'es1' oii ling erm hy means of'zi holt l5 which joins the flanges7 and is hele apart hy a spring coil 16,- lhe holte are pievicled with heads en lop of the Shoe llamgee lO :md with eollai'e 2l, below seid flanges, lo permil the shoes le elicle on the holt. lleeh shoe is guided on ite zum by holte l? eel-fied hy ille amil, and extending lyhiough lhe ylot l2 )l.tlie shoe.` Each hell; "le previflecl with a. lsezuil and e Waehei thereunder which bears eg inet the Shoe.

The: sides ol. euch Shoe embrace corre spending erm, one. el Ehe sides being sepa mie-rl hy :fi .lining lil adepte( o lelie up my eicle ploy luet\'.'een ihe Sheff. sind ils ezuiyihg .firm hf.' means el lghe Het sseeiw; 2G.

llie ell-eve i3 ie movahly iiioiuiecl on 'the 2l. wheieoii the lily `wheel. is mounted nml ifs rigidly eomieelieel 'with a. eollzii elidiugly .keyed on the Clutch shell The elufleh shell; provided with n. beaiinejoi' the journal of lhe ily wheel Shaft. wliieh ie provided with e Collar :Zlin 'fi-ent @if-the healing. The Sleeve 1.3 is provided with ai eylii'icli'if-,al recess feie. coil spring 25, adept-- ell to foi'ee seid Sleeve in the direction -olli the fly wheel.

Each clutch brake l consiste of the three Shoes lie'iihii lio 4the shoes el lihe Clutch brake i 'which ere elidingly nieuulefl en arms 2G,`

seid shoes being eonneeieil by Springs 27', with eA sleeve 28. mounleel en he easing' 29 of the i'ezir Wheel eide. @n the sleeve 28 is removably mounted eepli sleeve provided. 'ii/*zieh mi .zum lll nel with :i iiplieele eem 30 "lfipel lo eleve over lihe eaiu surface 3l he shoes. @n each eem sleeve between ffl its cam and arm is mounted a split sleeve provided with an arm 32 and with a triplicate cam 33 parallel with the cam 30 also adapted to move over the cam surfaces of 'the shoes. y y

The arms 18 are pivotally connected by rods 34 with the arms of a rock shaft 35, and the arms 32 are similarly connected with the arms of a r'ock shaft 36. The arms of the rock shaft 35 apivotally connected b rods 37 with the brake foot pedal 5 and t e arms of the rock shaft 36 are similarly connected with the hand lever 4.

The clutch brake collar 22 is pivotally connected with the arm of a bell crank 38, whose other arm is pivotally connected by a rod 39 with clutch foot-pedal 6.

From the above description it will appear l that when the clutch brake A is forced by the spring inside the fly wheel the springs which connect the shoes with their respective arms allow them to yield and prevent Ia. drag 0n the shoes, thereby preventing an uneven Wear of the contact surface. Furthermore the shoes can be easily removed when it becomes necessary to reline them.

When the foot brake is used to stop the car, the cams force the shoes of the clutch brakes B outwardly until they are in frictional contact with the inner surfaces of the casings 9, and when released the contact is .broken by the springs 27 pulling the shoes away. Similarly W en the hand brake is 'used to stop the car the cam 33 forces the shoes in contact with the casings 9, and are similarly released by the springs 27. The

shoes can be also removed or relining and, as the cam sleeves are split, they also can be removed for repair.

' Having thus described my invention what I claim as new and desire to protect by Let- 'y ters Patent, is:

1.In a friction brake, a shaft, a wheel i mountedto rotate with the shaft and provided with a peripheral flange, a sleeve surrounding said .shaft and provided with radial arms, shoes movably carried by said arms adapted to bear against the flange of the wheel, each shoe provided with radial ways for a corresponding arm, means operative to force said shoes-into contact with the ilange of theV wheel, and yielding means operative between the shoes and the arms adapted to equalize the wear of the contact surface between the shoes and the flange of the wheel.

2. ln a friction brake, a shaft, a wheel provided with a peripheral llange carried by the shaft, a sleeve provided with radial arms surrounding the shaft, a pair of boltsin radial alinement carried by each arm, a shoe to each armadapted to bear against the liange of the* wheel to join the shaft with the sleeve, each shoe provided with a radial slot to register with the bolts, and a yielding means operative between each shoe and a corresponding arm to equalize the bearing pressure between the shoes and the liange of the wheel, and means adapted to prevent the shoes from bearing against the flange of the wheel to disconnect the shaft from the sleeve. g

3. In a friction brake, a shaft, a wheel provided with a peripheral flange carried by the shaft, a sleeve providedvwith radial arms surrounding the shaft, shoes ada ted to bear against the llange t0 prevent tie relative movement of the shaft and sleeve, said shoes provided with radial ways for the arms to cause the bearing of the shoes against the flange to becircumfcrential, and a. bushing detachably mounted in the ways adapted to bear against the arms to take up the wear between the ways of the shoes and the arms of the sleeve.

1n testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHARLES W. MITCHELL.

Witnesses:

WILSON ROBERTS, CATHERINE C. SNYDER. 

